/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | foam-extend: Open Source CFD
   \\    /   O peration     | Version:     4.1
    \\  /    A nd           | Web:         http://www.foam-extend.org
     \\/     M anipulation  | For copyright notice see file Copyright
-------------------------------------------------------------------------------
License
	This file is part of foam-extend.

	foam-extend is free software: you can redistribute it and/or modify it
	under the terms of the GNU General Public License as published by the
	Free Software Foundation, either version 3 of the License, or (at your
	option) any later version.

	foam-extend is distributed in the hope that it will be useful, but
	WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
	General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.

\*---------------------------------------------------------------------------*/

#include "IOReferencer.H"

// * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * * //

template<class Type>
Foam::IOReferencer<Type>::IOReferencer
(
	const IOobject& io
)
:
	regIOobject(io),
	typePtr_(nullptr)
{
	if
	(
		io.readOpt() != IOobject::NO_READ
	 || io.writeOpt() != IOobject::NO_WRITE
	)
	{
		FatalErrorIn("IOReferencer<Type>::IOReferencer")
			<< "IOReferencer can only be NO_READ, NO_WRITE."
			<< abort(FatalError);
	}
}


template<class Type>
Foam::IOReferencer<Type>::IOReferencer
(
	const IOobject& io,
	Type* ptr
)
:
	regIOobject(io),
	typePtr_(ptr)
{
	if
	(
		(io.readOpt() != IOobject::NO_READ)
	 || (io.writeOpt() != IOobject::NO_WRITE)
	)
	{
		FatalErrorIn("IOReferencer<Type>::IOReferencer")
			<< "IOReferencer can only be NO_READ, NO_WRITE."
			<< abort(FatalError);
	}
}


// * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * * //

template<class Type>
Foam::IOReferencer<Type>::~IOReferencer()
{
	if (typePtr_)
	{
		delete typePtr_;
	}
}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class Type>
bool Foam::IOReferencer<Type>::writeData(Ostream& os) const
{
	// do nothing
	return os.good();
}


template<class Type>
const Type& Foam::IOReferencer<Type>::operator()() const
{
	if (!typePtr_)
	{
		FatalErrorIn
		(
			"IOReferencer<Type>::operator()"
		)
			<< "Attempting to derefence a null typePtr - use IOReferencer::set"
			<< "first."
			<< abort(FatalError);
	}

	return *typePtr_;
}


template<class Type>
Type& Foam::IOReferencer<Type>::operator()()
{
	if (!typePtr_)
	{
		FatalErrorIn
		(
			"IOReferencer<Type>::operator()"
		)
			<< "Attempting to derefence a null typePtr - use IOReferencer::set"
			<< "first."
			<< abort(FatalError);
	}

	return *typePtr_;
}


template<class Type>
void Foam::IOReferencer<Type>::set
(
	Type* ptr
)
{
	if (typePtr_)
	{
		delete typePtr_;
	}

	typePtr_ = ptr;
}


// ************************************************************************* //
